Coal City, IL Area Codes
Coal City, Illinois (population 5,831) uses area codes 815 and 779.
Carriers with Coal City numbers
6 prefixes are assigned to the Coal City exchange: 0% mobile, 50% VoIP and cable, 50% landline.
| Carrier | Prefixes |
|---|---|
| Lumen (CenturyLink) | 1 |
| First Communications | 1 |
| AT&T (Illinois Bell) | 1 |
| AT&T (Teleport) | 1 |
| Lumen (Level 3) | 1 |
| Bandwidth | 1 |
Area codes used in Coal City
| Area code | Prefixes serving Coal City | Main carriers in this code |
|---|---|---|
| 815 | 5 | Frontier, AT&T (Illinois Bell), Lumen (Level 3) |
| 779 | 1 | Onvoy (Sinch), AT&T Mobility, Stratus Networks |
Coal City phone number prefixes
Numbers starting with these first six digits were originally assigned to the Coal City exchange.
815-205Lumen (CenturyLink)815-518First Communications815-634AT&T (Illinois Bell)815-655AT&T (Teleport)815-709Lumen (Level 3)779-340Bandwidth
Nearby cities in area code 815
- Joliet
- Rockford
- Plainfield
- Crystal Lake
- DeKalb
- McHenry
- New Lenox
- Lockport
- Woodstock
- Belvidere
- Homer Glen
- Loves Park
Questions
- What is the area code for Coal City, IL?
- Coal City uses 2 area codes: 815 and 779. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
- What time zone is Coal City in?
- Coal City is in the Central time zone.